US3492708A - Tool supporting assembly - Google Patents

Tool supporting assembly Download PDF

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Publication number
US3492708A
US3492708A US604049A US3492708DA US3492708A US 3492708 A US3492708 A US 3492708A US 604049 A US604049 A US 604049A US 3492708D A US3492708D A US 3492708DA US 3492708 A US3492708 A US 3492708A
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US
United States
Prior art keywords
tool
tool holder
lever
supporting assembly
chip breakers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US604049A
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English (en)
Inventor
Theodor Dombrowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hegenscheidt MFD GmbH and Co KG
Original Assignee
Wilhelm Hegenscheidt GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wilhelm Hegenscheidt GmbH filed Critical Wilhelm Hegenscheidt GmbH
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Publication of US3492708A publication Critical patent/US3492708A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
    • B23B27/1666—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts clamped by a clamping member acting almost perpendicularly on chip-forming plane
    • B23B27/1674—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts clamped by a clamping member acting almost perpendicularly on chip-forming plane in which the chip-breaking clamping member is adjustable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/11—Cutters, for shaping including chip breaker, guide or deflector detachable from tool and tool holder
    • Y10T407/112—Adjustable relative to cutting edge
    • Y10T407/114—Adjustable relative to cutting edge including adjusting means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/2202—Plural spaced seats and common holder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/2272—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder
    • Y10T407/2274—Apertured tool

Definitions

  • a tool supporting assembly particularly for use in lathes for machining back to its original contour the flange and rim of a multiple-wear railroad wheel.
  • the lever and its chip breakers are movable longitudinally and transversely of the tool holder.
  • Tool supporting assemblies of the present invention can be utilized in machines of the type disclosed in my copending applications Ser. No. 440,170 (entitled Wheel Set Turning Lathes), 525,527 (entitled Machine for Treating Wheels of Rail Vehicles) and 529,336 (entitled Machine for Treating Wheels of Rail Vehicles).
  • Another machine which may utilize the tool supporting assembly of the present invention is disclosed in my Letters Patent No. 3,203,286, granted Aug. 3l, 1965 -for Underfloor Lathe for Reconditioning railway Vehicle Wheels.
  • the present invention relates to improvements in tool supporting assemblies, particularly to improvements in assemblies which can support turning tools for use in lathes for reconditioning of multiplewear railroad vehicle wheels.
  • the high tensile strength of such material results in the production of continuous chips or shavings which are not only dangerous to workmen but also occupy too much space. If the chips are not broken up, the pans, trays and/or other types of chip-collecting receptacles must be evacuated at frequent intervals because a coiled chip takes up much more space than a pile of fragments obtained in response to breaking of a continuous chip.
  • chip breakers are either inte'gral with the material-removing tools or are formed as separate bodies which are mounted on the material-removing tools. For example, it is known to provide the cutting face of a tool with a groove or depression which deflects the chip against an uncut portion of the workpiece and causes the chip to break into small pieces. If the chip breaker is a discrete piece of metallic material, it is normally clamped or brazed to the top of the tool.
  • the tools must be adjusted to remove thicker or thinner shavings, and the thickness of shavings varies along the circumference and also in the axial direction of the wheel.
  • the material of a railroad vehicle wheel is not homogeneous. Such material hardens by cold-forming when the wheel is in actual use and the hardening is uniform only if the starting material is homogeneous in each region of the wheel.
  • the variations in hardness are more pronounced in wheels which have undergone repeated reconditioning treatment in a turning lathe. Differences in hardness are also due to the fact that certain portions of the flanges and/or rims exhibit so-called flats which develop on repeated sliding along the rails in response to the application of brakes.
  • Another object of the invention is to provide a novel mounting for the carrier of one or more chip breakers in a tool supporting assembly of the just outlined character.
  • a further object of the invention is to provide a tool supporting assembly with one or more chip breakers wherein the part or parts which carry the chip breakers are not likely to accumulate dust, fragments of chips and/or other foreign matter.
  • An additional object of the instant invention is to provide a tool supporting assembly wherein the tools and/ or the chip breakers can be interchanged, reoriented and/or replaced with little loss in time and wherein the chip breakers are adjustable in one, two or more directions with reference to the associated tools.
  • a concomitant object of the invention is to provide a novel adjusting device for chip breakers and their carrier means which may be utilized in the above outlined tool supporting assembly.
  • a further object of the invention is to provide a tool supporting assembly which can be used in many presently known types of turning lathes or like material-removing machines.
  • An additional object of the invention is to provide a tool supporting assembly wherein the position of one or more chip breakers can be adjusted when the assembly is in actual use in a turning lathe or another material-removing machine.
  • An ancillary object of the invention is to provide a turning lathe which embodies the improved tool supporting assembly and to construct the assembly in such a way that all of its chip breakers can be adjusted in a single operation.
  • the invention resides in the provision of a tool supporting assembly which is especially suited to support turning tools for treatment of multiple-wear railroad vehicle wheels.
  • the tool supporting assembly comprises a tool holder, a turning tool mounted in a recess at yone end of the tool holder, a carrier which is preferably constituted by a lever adjacent to one side of the tool holder, a chip breaker mounted in a recess provided in one end portion of the carrier adjacent to the turning tool, biasing means operating between the tool holder and carrier to urge the chip breaker against the turning tool, and an adjusting device for moving the carrier in a plurality of directions with reference to the tool holder to change the position of the chip breaker with reference to the turning tool.
  • the tool holder supports two turning tools and the carrier supports two chip breakers each of which is caused to bear against the top face of one of the turning tools.
  • the adjusting device preferably comprises means for moving that end portion of the carrier which supports the chip breakers longitudinally and transversely of the tool holder.
  • FIG. 1 is a top plan view of a tool supporting assembly with two turning tools and two chip breakers which embodies one form of my invention
  • FIG. 2 is a side elevational view of the tool supporting assembly with a portion of the tool holder broken away and with the carrier for chip breakers shown in section taken along the line II-Il of FIG. l;
  • FIG. 3 is a top plan view of a second tool supporting assembly
  • FIG. 4 is a side elevational view of the second assembly with portions of the tool holder and carrier shown in section;
  • FIG. 5 is a smaller-scale top plan view of a rocking member which is utilized in the assembly of FIGS. 3 and 4;
  • FIG. 6 is a section as seen in the direction of arrows .from the line VI.-VI of FIG. 5.
  • FIGS. l and 2 there is shown a tool supporting assembly which is utilized in a lathe for machining back to its original contour the rim 50 and flange 51 of a multiple-wear railroad vehicle wheel 49.
  • Such lathes are disclosed, for example, in my aforementioned copending applications Ser. Nos. 440,170, 525,527 and 529,336.
  • the tool supporting assembly compri-ses an elongated plate-like tool holder 10, one end portion of which is provided with recesses la (only one shown) for two turning tools 2, 2 here shown as bits which are removable from their respective recesses and are clamped in position by bolts 7, 7 and nuts 8.
  • the bolts 7, 7 urge the tools 2, 2 flat against the surfaces bounding the respective recesses 1a and the nuts 8 are accessible from that side of the tool holder 1 which faces away from the tools.
  • the tools 2, 2 have exposed top faces or cutting faces 2A which are adjacent to two interchangeable chip breakers 3, 3 mounted in recesses 4a provided therefor in the left-hand end portion of an elongated carrier 4 here shown as a lever which overlies the upper side of the tool holder 1 and is biased against the tool holder to maintain the chip breakers 3, 3' in abutment with the respective top faces 2A.
  • the means for detachably securing the chip breakers 3, 3 to the left-hand end portion of the lever 4 comprises splined pins 16 or analogous fasteners of known design.
  • the biasing means for urging the chip breakers 3, 3 against the top faces 2A of the tools 2, 2 comprises a post 9 which is screwed into a tapped bore 1b of the tool holder 1 and extends with clearance through an opening 15 provided in the left-hand end portion of the lever 4.
  • the post 9 is surrounded by a helical spring 5 which bears against the exposed side of the lever 4 and whose bias may be adjusted by a nut 6 which meshes with the post 9 and controls the axial position of a cupped retainer 6a.
  • the recesses 1a are machined into the left-hand end portion 17 of the top surface of the tool holder 1 and such portion 17 is inclined with reference to the longitudinal direction of the tool holder.
  • the angle of inclination of the portion 17 corresponds to the negative back rake angle.
  • the adjusting device which can move the left-hand end portion of the lever 4 in a plurality of directions, particularly lengthwise and transversely of the tool holder 1, comprises an externally threaded pivot member 10 which meshes with and extends through the right-hand end portion of the lever 4 so that its tip can slide in an elongated channel or groove 11 machined into the upper side of the tool holder 1.
  • the channel 11 extends lengthwise of the tool holder 1 and its inclination is identical with or similar to that of the surface portion 17.
  • the pin 10 enables the left-hand end portion of the lever 4 and the chip breakers 3, 3 to travel in an arc about the axis of the pin 10.
  • the adjusting device further comprises a shifting bolt 12 which is in mesh with a bracket 13 secured to the righthand end face of the tool holder 1 by Screws -14. r1 ⁇ he head 12a of the bolt 12 extends into a notch 4c provided in the right-hand end portion of the lever 4. By rotating the non-circular end 12b of the bolt 12, the operator can move the lever 4 lengthwise whereby the tip of the pivot pin 10 slides in the channel 11.
  • the bracket 13 may constitute an integral part of the tool holder 1.
  • the axis of the bolt 12 is inclined in the same way as the channel 11.
  • the aforementioned adjusting device further comprises rocking means for pivoting the lever 4 about the pin 10.
  • rocking means comprises a shaft 20 one end of which is screwed into the tool holder 1 in a region intermediate the post 9 and pivot pin 10.
  • the shaft 20 has a cylindrical peripheral surface which is surrounded by an annular eccentric 19 provided with a handgrip member 21 and held against axial movement by a bolt 22 which is screwed into the upper end of the shaft 20'.
  • the eccentric 19 extends with negligible lateral clearance into an elongated slot 18 machined into an intermediate portion of the lever 4.
  • the lever 4 will be caused to pivot about the axis of the pin 10.
  • Such pivotal movement is possible because the opening 15 receives the post 9 with suicient clearance and because the head 12a is also received with some clearance in the notch 4c of the lever 4.
  • the lever 4 is adjustable lengthwise of the tool holder 1 (by means of the shifting bolt 12), and that the lefthand end portion of the lever and the chip breakers 3, 3 are pivotable or rockable on the pin 10 in response to angular displacement of the eccentric 19.
  • the operator can locate the chip breakers in a desired position with reference to the tools 2, 2'.
  • the chip breakers and the tools are readily accessible upon removal of nut 6 and eccentric 19.
  • the adjustments f the chip breakers 3, 3 are very small and their extent depends on the thickness of chips or shavings.
  • the chip breakers 3, 3 are preferably of identical size and shape and can be used interchangeably. This reduces the manufacturing cost and simplifies the storage of spare chip breakers.
  • Each chip breaker is preferably provided with two breaking or cutting faces and is in large surfaceto-surface contact with the lever 4 so that the latter can take up stresses which arise when the chip breakers are in actual use and are engaged by successive increments of chips. The entire assembly is very simple and fragments of chips cannot interfere with adjustments of the lever 4.
  • chip breakers 3, 3' are rigid with the lever 4, a single adjusting device suices to elfect simultaneous changes in the position of both chip breakers. Such mounting of chip breakers contributes to greater compactness, stability and reasonable manufacturing cost of the tool supporting assembly.
  • FIGS. 3 and 4 illustrate a second tool supporting assembly including an elongated plate-like tool holder 31 having at its left-hand end two recesses 31a for interchangeable turning tools 33, 33. These tools are held in their recesses by a clamping plate 32 which overlies portions of their top faces 33A and is pressed against the upper side of the tool holder 31 by an elongated cylindrical sleeve 35 sur-rounding a post 34 which meshes with the tool holder and extends with no clearance through a bore of the clamping plate. The sleeve 35 is pressed against the outer side of the clamping plate 32 by a nut 36 which meshes with the outer end of the post 34.
  • the sleeve 35 is provided with external threads and meshes with a lock nut 43 forming part of a modified adjusting device for an elongated carrier or lever 3-8.
  • the left-hand end portion of the lever 38 is provided with recesses 38a for two chip breakers 37, 37 which respectively abut against the top faces 33A of the tools 33, 33.
  • the chip breakers 37, 37 are soldered or brazed to the lever 38.
  • the biasing means for urging the chip breakers 37, 37 against the tools 33, 33 comprises a guide rod 51 which meshes with the lever 38 and extends with clearance through a slot 50a and into a chamber 50 of the tool holder 31.
  • the free end of the rod y51 carries a diskshaped -retainer 51a for a prestressed spring 52 which operates between the retainer and the bottom surface in the chamber 50.
  • the bias of the spring 52 may be adjusted by rotating the rod 51 or by moving the retainer 51a axially of the rod.
  • the retainer 51a may be constituted by a nut which meshes with the rod 51.
  • the rod 51 and retainer 51a can be said to form part of the lever 38 so that the spring ⁇ 52. actually operates between this lever and the tool holder 31 to press the chip breakers 37, 37 against the respective top faces 33A.
  • the righthand end portion of the lever 38 carries a pivot pin 48 which meshes therewith and extends into an elongated forwardly and downwardly inclined channel or groove 49 machined into the upper side of the tool holder 3-1.
  • the channel 49 extends toward the left-hand end of the tool holder 31 and the inclination of its bottom surface is the same as that of the top faces 33A.
  • the pivot member 48 and channel 49 form part of the adjusting device which enables the operator to move the substantially bell-shaped left-hand end portion 38A of the lever 38 in several directions.
  • the end portion 38A has a side facing the tool holder 31 and provided with a recess or depression 38B which receives with clearance the clamping plate 32 to allow for adjustment of chip breakers 37, 38 longitudinally as well as transversely of the tool holder 31.
  • the end portion 38A is formed with an opening 39 of oval or other non-circular outline and bounded at its outer end by a surface 40 which tapers toward the tool holder 31.
  • the opening 39 accommodates the sleeve 35 with substantial clearance and further receives a ring 42 at one end of a rocking member 44 which is shown separately in FIGS. 5 and 6.
  • the ring 42 has a wedge-shaped follower 41 which is slidable along the tapering surface 40 to thereby rock the lever 38 about the axis of the pivot pin 48.
  • the follower 41 can also move the lever 38 and pin 48 in the longitudinal direction of the channel 49 in the tool holder 31.
  • the rocking member 44 is provided with a handgrip portion 45 and carries a pin 47 whose head extends into an arcuate groove 38C machined into the exposed surface of the end portion 38A.
  • a knurled nut 46 When the operator tightens a knurled nut 46, the head of the pin 47 is locked to the lever 38 and the latter remains in the selected position of adjustment with reference to the tool holder 31. The operator then rotates the lock nut 43 to press the follower 41 against the surface 40.
  • bell-shaped lever portion 38A prevents entry of foreign matter into the space accommodating the clamping plate 32.
  • the manipulation of the adjusting device shown in FIGS. 3 and 4 is simpler than that of the adjusting device shown in FIGS. 1 and 2 because of a single member (44) sufcies to effect longitudinal and/or transverse adjustments of the chip breakers 37, 37.
  • the clamping plate 32 can be reached and the tools 33, 33 reoriented, interchanged or replaced immediately upon removal of the nut 36.
  • the radii of curvature of cutting edges on the tools 2, 2 or 33, 33 are preferably smaller than the radii of curvature of cutting edges on the chipbreakers 3, 3' or 37, 37'.
  • the chip breakers are preferably constituted by small plates of hardened metallic material which are adapted to be mounted in a plurality of positions and are discarded when dull because the cost of grinding and honing exceeds the cost of a new'chip breaker.
  • Chips moving beyond the cutting edges are strongly compressed so that their cross section exceeds the theoretical value based on the feed and depth of cut.
  • the compression is particularly pronounced along the rounded portions of the tools where the chips interfere with each other and thus the chips removed by the rounded portions are especially wide. Therefore, and as clearly shown in FIGS. l and 3, the distance between the rounded portions of tools and the respective chip breakers exceeds the distance between the straight portions. This is achieved by the aforementioned relationship between the radii of curvature.
  • a tool supporting assembly especially for use in machining or tooling eccentric surfaces such as profiles of used railroad vehicle wheels in which the chip thickness changes while the wheel during its machining makes a full revolution, comprising a tool holder member; a tool mounted in said tool holder member; an elongated carrier mounted on said tool holder member for limited universal movement with respect thereto; a chip breaker mounted in said carrier adjacent said tool with one face of said chip breaker engaging the corresponding face of said tool; resilient biasing means operating between said tool holder and said carrier to urge the latter towards said tool holder member to thereby forceably press said face of said chip breaker against said corresponding face of said tool; and adjusting means for quickly moving said carrier against the force of said resilient biasing means in a plurality of positions relative to said tool holder member so that the position of said chip breaker relative to said tool may be quickly changed during machining of the wheel and before the latter makes a full revolution.
  • a tool supporting assembly as defined in claim 3, wherein said adjusting means comprises rocking means for turning said lever member about said pivot pins.
  • said biasing means comprises a post fixed to said tool holder member and extending with clearance through an opening provided in said carrier, a prestressed spring mounted on said post and bearing against the carrier to bias said chip breakers against the respective tools, and means for regulating the bias of said spring.
  • a tool supporting assembly as defined in claim 2, wherein said adjusting means comprises a post mounted in said tool holder member and extending through an opening provided in said carrier, said opening being bounded by a surface having angularly spaced portions disposed at different distances from said post, and a rocking member rotatable on said post and abutting against said surface.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
US604049A 1965-12-24 1966-12-22 Tool supporting assembly Expired - Lifetime US3492708A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEH0058072 1965-12-24
DEH0058163 1966-01-07

Publications (1)

Publication Number Publication Date
US3492708A true US3492708A (en) 1970-02-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
US604049A Expired - Lifetime US3492708A (en) 1965-12-24 1966-12-22 Tool supporting assembly

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US (1) US3492708A (enrdf_load_stackoverflow)
DE (2) DE1287898B (enrdf_load_stackoverflow)
FR (1) FR1505835A (enrdf_load_stackoverflow)
GB (1) GB1174100A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065223A (en) * 1975-07-31 1977-12-27 Nelson Stanford C Disposable cutting insert and tool holder therefor
CN111299626A (zh) * 2019-12-16 2020-06-19 株洲钻石切削刀具股份有限公司 一种可切换式双刀片的切削刀具

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE28896E (en) * 1972-08-14 1976-07-13 Lumco Manufacturing Company Cutting tool assembly
US3760475A (en) * 1972-08-14 1973-09-25 Lumco Manuf Co Cutting tool assembly
JPS5527802B2 (enrdf_load_stackoverflow) * 1973-07-12 1980-07-23
EP0121582A1 (de) * 1983-04-07 1984-10-17 Fried. Krupp Gesellschaft mit beschränkter Haftung Befestigungsvorrichtung für Schneidelemente
JPS60501051A (ja) * 1983-04-12 1985-07-11 フリ−ド・クルツプ・ゲゼルシヤフト・ミト・ベシユレンクテル・ハフツング 切削要素の固定装置

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE604C (de) * 1877-08-16 C. SrAHMER, Fabrikant, in Georg-Marienhütte. { Eisenbahn-Zugbarriere. I
US2173772A (en) * 1938-02-07 1939-09-19 Charles B Timmons Adjustable chip deflector
FR956473A (enrdf_load_stackoverflow) * 1950-02-02
FR1041370A (fr) * 1951-08-27 1953-10-22 Dispositif brise-copeaux pour outil de coupe
FR60931E (fr) * 1950-04-14 1955-02-21 Outil à plaquette interchangeable
US2937432A (en) * 1958-05-19 1960-05-24 Raymond E Novkov Adjustable chip breaker
US2967345A (en) * 1958-10-08 1961-01-10 Manchester Machine & Tool Comp Adjustable chip breaker
FR1271621A (fr) * 1960-08-02 1961-09-15 Diacarb Perfectionnements aux outils de coupe
US3124866A (en) * 1964-03-17 novkov
US3136031A (en) * 1961-07-11 1964-06-09 James P Cassidy Tool holder
US3171188A (en) * 1963-05-10 1965-03-02 Willeys Carbide Tool Co Cutting tool
US3187407A (en) * 1962-01-11 1965-06-08 Poudres Metalliques Alliages Speciaux Ugine Carbone Tool holders

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR956473A (enrdf_load_stackoverflow) * 1950-02-02
US3124866A (en) * 1964-03-17 novkov
DE604C (de) * 1877-08-16 C. SrAHMER, Fabrikant, in Georg-Marienhütte. { Eisenbahn-Zugbarriere. I
US2173772A (en) * 1938-02-07 1939-09-19 Charles B Timmons Adjustable chip deflector
FR60931E (fr) * 1950-04-14 1955-02-21 Outil à plaquette interchangeable
FR1041370A (fr) * 1951-08-27 1953-10-22 Dispositif brise-copeaux pour outil de coupe
US2937432A (en) * 1958-05-19 1960-05-24 Raymond E Novkov Adjustable chip breaker
US2967345A (en) * 1958-10-08 1961-01-10 Manchester Machine & Tool Comp Adjustable chip breaker
FR1271621A (fr) * 1960-08-02 1961-09-15 Diacarb Perfectionnements aux outils de coupe
US3136031A (en) * 1961-07-11 1964-06-09 James P Cassidy Tool holder
US3187407A (en) * 1962-01-11 1965-06-08 Poudres Metalliques Alliages Speciaux Ugine Carbone Tool holders
US3171188A (en) * 1963-05-10 1965-03-02 Willeys Carbide Tool Co Cutting tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065223A (en) * 1975-07-31 1977-12-27 Nelson Stanford C Disposable cutting insert and tool holder therefor
CN111299626A (zh) * 2019-12-16 2020-06-19 株洲钻石切削刀具股份有限公司 一种可切换式双刀片的切削刀具

Also Published As

Publication number Publication date
DE1287899B (enrdf_load_stackoverflow)
GB1174100A (en) 1969-12-10
DE1287898B (enrdf_load_stackoverflow)
FR1505835A (fr) 1967-12-15

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